Water-motor.



A. F. MILLER.

WATER MOTOR.

APPLICATION FILED FEB. 8, X916.

Patented. Oct. 16, 1917.

Inventor Attorneys ANDREW F. MILLER, 0F COLUMBUS, OHIO, ASSIGITOR TO ERWIN R. JONES, OF

' COLUMBUS, OHIO.

WATER-MOTOR.

Specification of Letters Patent.

I Patented Oct. 16, 1917.

Application filed February 8, 1916. Serial No. 76,976.

T '0 all whom it may concern:

Be it known that I, ANDREW F. MILLE a citizen of the United States, residing at olumbus, in the county of Franklin and State of Ohio, have invented a new and useful Water-Motor, of which the following is a specification.

The present invention appertains to pressure fluid motors, and aims to provide a mo-. tor adapted to use water or other motive fluid and designed especially for use upon washing machines, although the motor can be used for divers other purposes.

It is the object of the invention to provide a motor of the nature indicated embodying a novel and improved assemblage of the component elements to enhance the utility and efliciency of the motor, the motor being equipped with novel means for operating the valves whereby they will be effectively and properly reversed as the positions of the pistons are reversed.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of.,the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein z-- Figure 1 is a longitudinal vertical section of the motor taken through the cylinders.

Fig. 2 is an end view of the motor.

Fig. 3 is a detailed view illustrating the connection between the shaft and yoke.

In carrying out the invention, there is provided a pair of alining opposite horizontal cylinders 1 having their adjacent ends threaded or otherwise engaged within a coupling sleeve 2, which is provided at one side with an outstanding ear 3 secured by means of a bolt 4 or otherwise upon a standard 5 provided upon a base 6.

Caps 7 are threadedly or otherwise engaged to the remote ends of the cylinders 1 and piston rods 8 are slidable through said caps and have attached to the adjacent ends thereof the pistons 9 which work within the cylinders. The remote ends of the piston rods 8 are connected to the upturned ends of a yoke 10 extending below the cylinders and sleeve 2, and the yoke 10 is provided between its ends and at one side with a series of teeth 11 forming a rack. The yoke 10 connects the piston rods for reciprocation in the same direction.

The reciprocation of the yoke 10 is utilized for rotatin in opposite directions a vertical shaft 12 ournaled through the base 6 and within the standard 5, said standard being provided with a recess 13 through which the shaft rojects, and a sleeve 14; is secured to the sha t within the recess 13. This sleeve has a wing or segment 15 projecting there from under the teeth 11, and said segment has upstanding pins 16 engageable with the teeth 11, whereby the shaft 12 will be rocked or oscillated by the reciprocation of the yoke. The pins l6 are separated by an an le of about 90 degrees. This shaft may e used for operating the dasher or agitator of a washing machine, although it is to be understood that the motor can be used for many other purposes.

Each of the pistons 9 embodies a pair of plates or disks 17-18 and a leather or equivalent packing l9 clamped therebetween to provide a tight fit with the respective cylinder 1. To secure the piston to the inner end of the respective rod 8, said end of the piston rod has a. reduced extension 20 projecting in the plate 17 and packing 19, and a nut or other retaining element 21 is engaged upon the extension 21 to clamp the piston to the piston rod.

The innermost plate 18 of the piston has a frusto-con ical extension 22 at the center thereof, said extension being hollow, and

having an aperture 23 at itssmaller free end through which is slidable a plunger 24. The plunger is provided within the extension or housing 22 with a collar 25 normally seating against the smaller end of the extension with the plunger 24 projecting therefrom, as seen at the right hand side of Fig'. 1. A spiral spring 26 is confined within the extension 22 and has its larger end bearing against the packing 19 and its smaller end bearing against the collar 25 to project the plunger 24. The springs 26 in being housed within the extensions 22 will be protected thereby.

Within the sleeve 2 is a pair of partitions 27 forming the inner ends of the cylinders, andthe sleeve 2 has a diametrical or horizontal partition 28 between the partitions 27 providing the lower inlet chamber 29 and the upper outlet chamber 30. The sleeve 2 is provided with hose connections 31 and 32 providing an inlet and outlet for the respective chambers 2930. The lower hose connection 31 is secured, as at 33, upon the base 6 to render the structure rigid. The partitions 27 are provided below the partitions 28 with openings 34 establishing communication between the cylinders and inlet chamber 29, and said partitions 27 are provided above the partition 28 with openings 35 establishing communication between the cylinders and outlet chamber 30.

In order to control the flow of water I through the openings 34 and 35, united valves 36 are disposed within the chambers '29 to seat within the openings 34 and have stems 37 slidable through said openings to guide said valves for reciprocation, and a pair of valves 38 disposed within the cylinders are seatable within the openings 35 and are connected by'a stem 39 slidable in said openings to guide the valves 38 for reciprocation. The valves of each pair seat and unseat alternately, and the two double valves are connected by means of bars or yokes 40 bearing against the valves 38 and the stems 37, and secured thereto. Thus, the valves 38 have reduced extensions 42 engaged through the bars or yokes 40, and the stems 37 have reduced extensions 41 engaged through saiohbars, and nuts 42 are threaded upon said reduced extensions to clamp the parts together. The valves are thus all united, to reciprocate in unison.

In operation, supposing water or other motive fluid is supplied into the inlet chamber 29, and assuming the parts to be in the position illustrated in Fig. 1, then the water will flow through the left hand opening 34, the valves being moved to the right, and the Water in flowing into the left hand cylinder 1 will force the left hand piston to the left, and through the medium of the yoke 10 will move the right hand piston 9 likewise. Thus, the water within the right hand cylinder 1 will be ejected through the respective opening 35 into the outlet chamber 30.

When the right hand piston 9.approaches the valves, the plunger 24 of said piston will strike the right hand yoke 40, thereby bringing its spring 26 under compression, and therebyv forcing the valves to the left to reverse the position thereof. The right hand opening 34 is now open, while the left hand opening 34 is closed, and the ri ht hand opening 35 is now closed, while the eft hand opening 35 is open. The water will therefore flow into the right hand cylinder 1 to move the pistons to the right, and when the left hand piston reaches the valves, the plunger 24 carried by said piston will return the valves to the position illustrated in Fig. l. The pistons and parts connected thereto are thus reciprocated for actuating the shaft 12.

Particular attention is directed to the fact that the springs are protected by the extensions 22, and that the plungers engage the valve structure to operate it, the plungers being yieldably projected in order to yieldably operate the valves, but when the plungers are forced to flush with the extensions 22, said extensions are adapted to abut.

against the yokes 40 for positively operating the valves if necessary, due to the failure of the springs 26 to do their duty. The valvesare thus operated in a thoroughly reliable and satisfactory manner.

With the provision of the three teeth 11 and the two pins 16 working between the teeth 11, the pins 16 come between the rock shaft 12 and the yoke 10 at the ends of the strokes of the yoke, whereby an effective arrangement is provided. Referring to Fig. 3, and supposing that the yoke 10 is moving to the left, the left hand pin 16 will be given an accelerating motion, since it moves in a circular Path, while the yoke 10 moves in a rectilinear path, then as the left hand pin. 16 leaves its teeth, and the right hand pin 16 engages the teeth, the motion of the segment 15 is gradually decreased when the yoke 10 reaches the end of'its leftward stroke. Thus, the rock shaft is first moved with an accelerated motion, and then with a gradually decreasing motion, during each oscillation thereof.

Having thus described the invention, what is claimed as new is:

In a fluid motor, a cylinder, inlet and outlet valves and a rigid connection between them, a piston having a rigid extension with an aperture therein, a spring in the extension and a plunger extending through the aperture and held against the spring whereby in a forward movement of the piston the spring pressed plunger first comes against the valve connection and if the valves fail to respond, a further movement of the piston will force the rigid extension against said connection, thus preventing excessive compression of the spring.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

ANDREW F. MILLER. W'itnesses i J. F. Rooms, H. A. LEITWEIN. 

